authentic Allen Engineering thread protector for your Mk12 build
This is the thread protector that is needed for the Allen Engineering brake mount. 100% genuine, made by Ron Allen. This is one part of three parts that you need for a Mk12 build, or for any other barrel with the 12 / AEMB mount. This thread protector will also work for Allen clone mounts, from BCM, Otter Creek and Centurion. Many of those companies do not offer a thread protector. Any mount that is made for an AEM5 or OPS 12 suppressor or clone, this thread protector will fit just fine.
Perfect for:
- Mk12 Mod 0
- Mk12 Mod H
- NSWC RECCE rifles
- “Gordon Carbine” builds










